6.4. Data preparation

Try these first

1. 1.

   What is data correction and why is it important?

   Hint

   Think about why accuracy matters in surveys.

2. 2.

   Describe the purpose of sample expansion.

   Hint

   How do we ensure our smaller data set accurately represents a bigger group?

3. 3.

   What does data correction help to achieve?

   • Enhance data accuracy
   • Reduce data
   • Increase costs

   Hint

   Think about why we worry about data quality.

4. 4.

   True or False: Sample expansion is only performed if the survey sample is too small.

   • True
   • False

   Hint

   Consider the purpose of accurately reflecting the overall population.

5. 5.

   If a survey collects data indicating an average household size of 3 but census data reveals 5, what adjustments need to be made?

   Hint

   Consider how the sample size correlates with actual census data.

6. 6.

   Given survey results of 150 completed responses out of a total of 600 households, with 50 no responses, calculate the expansion factor, and explain its significance.

   Hint

   Use the expansion factor formula correctly to yield your conclusions.